platform/lang-impl/src/com/intellij/codeInsight/quickfix/UnresolvedReferenceQuickFixProvider.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.codeInsight.quickfix;
  17
  18 import com.intellij.codeInsight.daemon.QuickFixActionRegistrar;
  19 import com.intellij.openapi.extensions.ExtensionPointName;
  20 import com.intellij.openapi.extensions.Extensions;
  21 import com.intellij.openapi.project.DumbAware;
  22 import com.intellij.openapi.project.DumbService;
  23 import com.intellij.psi.PsiReference;
  24 import com.intellij.util.ReflectionCache;
  25 import org.jetbrains.annotations.NotNull;
  26
  27 public abstract class UnresolvedReferenceQuickFixProvider<T extends PsiReference> {
  28
  29   public static <T extends PsiReference> void registerReferenceFixes(T ref, QuickFixActionRegistrar registrar) {
  30
  31     final boolean dumb = DumbService.getInstance(ref.getElement().getProject()).isDumb();
  32     UnresolvedReferenceQuickFixProvider[] fixProviders = Extensions.getExtensions(EXTENSION_NAME);
  33     Class<? extends PsiReference> referenceClass = ref.getClass();
  34     for (UnresolvedReferenceQuickFixProvider each : fixProviders) {
  35       if (dumb && !(each instanceof DumbAware)) {
  36         continue;
  37       }
  38       if (ReflectionCache.isAssignable(each.getReferenceClass(), referenceClass)) {
  39         each.registerFixes(ref, registrar);
  40       }
  41     }
  42   }
  43
  44   private static final ExtensionPointName<UnresolvedReferenceQuickFixProvider> EXTENSION_NAME =
  45       ExtensionPointName.create("com.intellij.codeInsight.unresolvedReferenceQuickFixProvider");
  46
  47   public abstract void registerFixes(T ref, QuickFixActionRegistrar registrar);
  48
  49   @NotNull
  50   public abstract Class<T> getReferenceClass();
  51 }